In the winter you would find:
*ice
*icicles
Some things you might find during winter that starts with an I include: ice, igloo, icicle
leggings
Lights
Some things that you might find during the winter that begin with the letter N include: Nuts Nutcracker Nutmeg Noodles Nachos Noel Nestle
toys
lake
langeria, lifts (ski)
new snow
During the winter you may find many things that start with the letter N. Nutcrackers, nuts, new stuff, noel, and that is just the beginning of words that are out there that you could find in the winter that start with the letter N.
You can find toboggans in winter. You also will find tinsel and tree decorating in winter.
As winter is at different times of the year in different hemispheres you will have to be precise as to location and whos winter.
tinkle and tophats and turdes and tickets to a winter festival